Ernst fortaner



(No Model.)

E. FORTANE-R.

CUTTING TooL FOR PIPBS AND BARS.

No. y666,130.

f uz q\ V///// //AQHH Patented June 21,1898.

WMA/www UNITED STATES PATENT @Finca ERNST FORTANER, OF MUNICH, GERMANY.

CUTTING-TOOL FOR PIPES AND BARS.

SPECIFICATION forming part of Letters Patent No. 606,130, dated June 21, 1898.

Appiicaioii iiiea Apiii 4, 189s. serial No. 676,393. ou model.)

T0 all whom it may concern:

Beit known that I, ERNST FORTANER, a subject of the King-of Bavaria, residing at Munich, Kingdom of Bavaria, Germany, have invented certain new and useful Improvements in Cutting-Tools for Pipes and Bars, of which the followingis a full, clear, and eX- act description. A

The present invention relatesito cuttingtools for pipes and bars; and it consists in the details of construction hereinafterdescribed, and particularly set forth in the claims appended; andY in order to render the present specification more easilyintelligible reference is had to the accompanying drawings,in which similar letters of reference denote similar parts throughout the sev-eral views.

Figure 1 is' a vertical section of one form embodying the invention. Fig. 2 is a cross-section alongline 1 1 of Fig. 1; Fig. 3, a longitudinal section taken at an angle of ninety degrees to that of Fig. 1. Fig. 4 shows in section a modiiied device for attaching the cutter'to its adj usting-bar. Fig. 5 shows a further modification of this device; and Fig. 6. is a front elevation of the upper part of the tool, showing the stationary and movable jaws.`

The stationary jaw a is penetrated at j to enable the movable jaw c to enter it when it is required to cut tubes or bars of small diameter. The lower end of thestationary jaw a is tubular and provided Ywith an exterior thread, as at a', on which a sleeve CZ may be screwed upand down. Vithin the tubular bar of the stationary jaw u. is mounted la second tube b, to the upper end of which is attached the movable jaw c, and within this tube Z) again is mounted a bar e, to which the cutter f is attached, as may be seen at Fig. 3, said cutter having a lug at its lower end, which is adapted to enter a recess in the bar e. The lower end of the tubeb of the Inovable jaw c is fixed to the lower end of the sleeve d, being revoluble as regards the latter, but not longitudinally adjustable relatively to the same. Thus when the sleeve d is screwed up or down the hollow stem a of the stationary claw the two claws will be opened or closed. The stationary claw ci is provided with lateral guide-cheeks a0,in which the movable claw is guided, and when the claws are adj usted very closely together the movable one will be guided, in the opening]- of the stationary claw. Both claws are recessed, as will be seen at Fig. 1, at their cooperating surfaces. A second sleeve g is mounted on the lower end of the sleeve d and revoluble thereon, and a screw-spindle c is mounted in the end of said sleeve g, said screw-spindle being revolubly coupled to the cutter-bar e, as will be seen at Fig. 3, by means of a pin and groove e2 and c3. Thus when the sleeve cl is turned the jaws will be adjusted as regards each other, but the position of the cutter to the movable jaw will not be altered, as the sleeve or tube b will simply turn on the spindle e. If, however, the sleeve g is turned, the position of the cutter frelatively to the movable jaw may be ad- K justed, the cutter-bar e being moved within the tube 5 as willbe evident on reference to the drawings.

In order to utilize the whole length of the cutter, the latter is advantageously arranged adjustable as regards its carrier-bar c, and this may be done in either of the ways illustrated in Figs. 4i and 5. According to Fig. 4L the bar is provided with a slot to receive the cutter, which has a lateral flange at its lower end, the slot being provided with a series of lateral notches, into which the iiange is passed. As soon as, the cutter is worn down the bar may be taken out of the tool andthe fiange of the cutter adjusted in the lateral notch ai', which is above the notch from which it'has been taken.

In Fig. 5 the bar is provided with a series of borings x2, into any one of which the cutter may be fixed by means of the pin e0. j

The arrangement of the jaws prevents cutting -the tube or bar askew and provides for an effectual clean cut, while no movement laterally of themovable jaw with regard to the stationary jaw is possible owing to the effective way in which the former is guided by the cheeks a0 vand the openingj` of the latter.

The upper part of the jaw d may be prox vided with a socket, into which a bar 1I may be placed to enable the tool to be worked with both hands.

I claim as my invention- 1. In a cutting-tool, the combination of a stationary jaw having an opening there- IOO through and a movable jaw adapted to enter said opening, an exteriorly-threaded tubular stem to said stationary jaw and a tubular stem for the movable jaw arranged Within the same, an nteriorly-threaded sleeve to screw on said stationary-jaw stem and having the movable-janT stem attached thereto, a bar Within the movable-jaw stem, ascreW-spindle revolubly coupled to said bar, a lower sleeve fixed to said screw-spindle and revoluble on said interiorly-threaded sleeve, a cutter and means for attaching the same to the carrierbar substantially as described.

2. The combination of a stationary cheek a having orifice j therethrough and guidecheeks a", a movable cheek c to move between said guide-cheeks andinto said orifice, a tubular stem to said stationary cheek and a tubularstem guided therein to said movable cheek, a cutter and cutter carrienbar Within said movablejaw stem, and means for adj ust-ably attaching the tWo parts, an outer sleeve d to adjust the jaws against each other, and a lower sleeve g mounted on said outer sleeve and means in connection therewith for adj ustng the position of the cutter and carrierbar relatively to the movable jaw but independently of both jaws substantially as described.

3. In a cutting-tool having a stationary cheek and a movable cheek the combination of an opening in the stationary cheek and guide-cheeks on the same for the reception of the movable cheek, a tubular stem to the said stationary cheek and a hollow stem therein for the movable cheek, a cutter and a cutter carrier-bar mounted Within the stem of the movable cheek and means in connection with said stems and bar to adj us't the position of the jaws or cheeks, and means for adj ustingthe position of the cutter relative to the movable j aw and for adjustingr the position of the cutter on its carrienbar, and a socket in the upper part of the stationary jaw substantially as described.

In Witness whereof I have hereunto sot my hand in presence of two Witnesses.

ERNST FOR'FANER.

lVitncsses:

EMIL I IENZEL, ALBERT WEICKMANN. 

